said by Voyager2K2:Crap. ATT added 2.4 million iPhones to their network 2Q 2009. It IMHO caused it to collapse. Now Sprint with AFAIK a healthy network adds this pressure to it is sure to have problems.
All the kiddies are going to have P2P running 24/7 so they can have THEIR music as well as all the background bandwidth that spy/adware as well virus activity breeds from P2P services.
WTF Sprint? ATT chose to dance with the devil, now you?
It's not as simple as adding back haul when your demands increase.
The Wimax network is completely separate from Sprint's 3g EVDO network. Your concerns are unfounded.